From: Wu Fengguang <fengguang.wu@intel.com>
Date: Sat, 23 Apr 2011 18:27:27 +0000 (-0600)
Subject: writeback: trace event writeback_queue_io
X-Git-Tag: v3.1-rc1~228^2~12
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e84d0a4f8e39a73003a6ec9a11b07702745f4c1f;p=pandora-kernel.git

writeback: trace event writeback_queue_io

Note that it adds a little overheads to account the moved/enqueued
inodes from b_dirty to b_io. The "moved" accounting may be later used to
limit the number of inodes that can be moved in one shot, in order to
keep spinlock hold time under control.

Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
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